Connecting the Dots (LineRenderer)

I would like to draw a line between to GameObjects: A parent and it's child(ren).

I learned in another thread that LineRenderer.SetPosition is the command I want for this. I haven't tested this yet as I am out of town away from my computer (always creating!)

Code (javascript):

1.  
2.  
3. var tObject : Transform;
4.  
5. function Start()
6. {
7.      var c1 : [URL='http://docs.unity3d.com/ScriptReference/Color.html']Color[/URL] = [URL='http://docs.unity3d.com/ScriptReference/Color-yellow.html']Color.blue[/URL];
8.      var c2 : [URL='http://docs.unity3d.com/ScriptReference/Color.html']Color[/URL] = [URL='http://docs.unity3d.com/ScriptReference/Color-red.html']Color.green[/URL];
9.      //var lengthOfLineRenderer : int = 20; function Start() {
10.      var lineRenderer : [URL='http://docs.unity3d.com/ScriptReference/LineRenderer.html']LineRenderer[/URL] = gameObject.AddComponent([URL='http://docs.unity3d.com/ScriptReference/LineRenderer.html']LineRenderer[/URL]);
11.      lineRenderer.material = new [URL='http://docs.unity3d.com/ScriptReference/Material.html']Material[/URL] ([URL='http://docs.unity3d.com/ScriptReference/Shader.Find.html']Shader.Find[/URL]("Particles/Additive"));
12.      lineRenderer.SetColors(c1, c2);
13.      lineRenderer.SetWidth(0.2,0.2);
14.     // lineRenderer.SetVertexCount(lengthOfLineRenderer);
15. }
16. function Update()
17. {
18.      for each(Transform in transform) // for each child node in this transform
19.      {
20.           tObject = Transform;
21.           lineRenderer.SetPosition(transform.position, tObject.transform.position);
22.      }
23. }
24.  

Thoughts? Should this in theory draw a line between the Parent object (transform) and the child objects (tObject)?

 

no, SetPosition take int index and Vector3 position. You copied the documentation example, read it again.

 

Is there not a way to draw from a given .position to another .position?

 

yeah,

Code (CSharp):

1. setvertexcount(2)
2. setposition(0, posA)
3. setposition(1, posB)
4.  

Simplify it by having an array of objects to connect and then iterate that

Code (CSharp):

1. for(int i=0; i<array.length; i++){
2.   setposition(i,array.position)
3. }

 

something along these lines?

Code (javascript):

1.  
2. function OnMouseDown()
3. {
4. //var i : int = 0;
5. var parentPos : Vector3 = gameObject.transform.position;
6. for each(Transform in transform) // for each child node in this transform
7. {  
8.         tObject = Transform;
9.         lineRenderer.SetPosition(0, parentPos);
10.         lineRenderer.SetPosition(1, tObject.transform.position);
11.        
12. }
13. }  
14.  
15.  
16.  

 

No, with this code you're constantly setting the first 2 vertex of your line renderer, so after your foreach loop is done you'll have a line between the parent and the last object but that's it.

If you want to connect each object together you must use a for loop like in hpjohn's example.

 

Ah, sorry, I didn't explain my intentions well enough.

I am trying to draw a line between the Parent and multiple children (like a network instead of a true line). So according to you, my script would do just that: I wold then apply this same script to the child objects to further the network

Parent -- childA
Parent -- childB

 

Ah yes, es but then you'd need one line renderer per child object and put the script on the child!

 

So this sort of worked. But it only rendered a line to the first child.

Also, is there a way to disable the line? Or would I need to destroy it when it's not needed?